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Low‐cost nano‐TiO 2 composites for remediation of textile dyes: Appraisal on the effect of solar and ultraviolet irradiations
Author(s) -
Kaur Harleen,
Kalia Anu
Publication year - 2021
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.23775
Subject(s) - titanium dioxide , photocatalysis , nanocomposite , degradation (telecommunications) , methyl orange , adsorption , nano , environmental remediation , chemical engineering , ultraviolet , nuclear chemistry , chemistry , materials science , congo red , irradiation , composite material , catalysis , contamination , organic chemistry , ecology , optoelectronics , engineering , biology , telecommunications , physics , computer science , nuclear physics
The study evaluates the azo dye degradation potential of nano‐TiO 2 ; its composites with low‐cost substrates in the form of powder and encapsulated bead for two widely used azo dyes, methyl orange (MO) and congo red (CR) under solar and ultraviolet (UV) irradiation. Degradation potential varied according to the dye concentration, chemistry of dye, light source, and the formulation of the photocatalyst. Both the dyes were completely decolorized at 100 mg/L concentration and to some extent at 1,000 mg/L concentration. The activated charcoal‐titanium dioxide (AC‐TiO 2 ) nanocomposite in the presence of solar radiations proved to be an economic and efficient substrate for degradation of the test dyes exhibiting combined action of adsorption and photocatalytic phenomena.